Research on effect of lightning shielding level of EHVDC transmission line by installing coupling ground wire

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Zou, Yanhui^1 ; Yue, Yishi^1 ; Huang, Fuyong^1 ; Wang, Haiyue^2

Electric Power Research Institute, State Grid Hunan Electric Power Company, Changsha, Hunan

410007, China^1

Equipment Department, State Grid Hunan Electric Power Company, Changsha, Hunan

410007, China^2

关键词: Coupling ground wires;    Different heights;    Electric geometry models;    Ground wire;    Lightning flashover;    Lightning shielding;    Lightning shielding failures;    Simulation model;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/3/032058/pdf
DOI  :  10.1088/1755-1315/310/3/032058

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Lightning shielding failure is the main reason causing lightning flashover of Jiangcheng EHVDC transmission line because of the designed ground wire protection angle. Based on the electric-geometry model, a simulation model including the coupling ground wire is established by using MATLAB. The effect of the coupling ground wire at different height and horizontal position on lightning shielding failure flashover rate is analysed. Results show that coupling ground wire can reduce the lightning shielding failure flashover rate and the lightning shielding performance increases with the increase of the height of the wire and the horizontal distance between the axis of the tower and the coupling ground wire.